Answer: d. Increase Decrease
Step-by-step explanation:
Available - For - Sale securities are accounted for in the Equity section of the balance sheet under Other Comprehensive income (OCI). As the gains cannot be realised until the security is sold, it is accounted for here to show an increase or a decrease in value. When the security gains in value over what it cost, this will increase OCI and when it losses value below what it cost, this will reduce the OCI.